Function resolveOptionalPluginSetting

resolveOptionalPluginSetting(
    api: PluginApi,
    pluginId: string,
    key: string,
    envVar: string,
): string | undefined
Resolve an optional plugin setting via the two-step fallback chain: plugin config → environment variable. Returns undefined if neither source provides a value.
Parameters
- api: PluginApi
  Plugin API object.
- pluginId: string
  Plugin identifier (e.g., 'jeeves-watcher-openclaw').
- key: string
  Config key within the plugin's config object.
- envVar: string
  Environment variable name.
Returns string | undefined
The resolved setting value, or undefined.
- Defined in plugin/resolve.ts:75